Rotary steam-engine



' (No Model.) v D. G. WHERRY.

ROTARY STEAM-ENGINE. v No. 335,001. Patented Jan. 26, 1886.

NITED STATES PATENT Tries,

DAVID G. I-TERRY, OF ALEXANDRIA, NEBRASKA.

ROTARY STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 335,001, dated January 26,1886.

Application filed September 4, 1885.

To aZZ whom it may concern:

Be it known that I, DAVIDG. Wanner, a citizen of the United States of America, residing at Alexandria, in the county of Thayer and State of Nebraska, have invented certain new and useful Improvements in Rotary Steanr Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference mark ed thcrcon,which form apart of this specification.

My invention relates to certain new and usefulimprovements in rotary engines; and it consists in the construction and combination of the parts, as will be hereinafter fully set forth,and specificall y pointed out in the claims.

In the accompanying drawings,which illustrate my invention Figure 1is a perspective view of my improvement, showing the exterior of the engine with the supply and exhaust pipes removed therefrom. Fig. 2 is an end view showing the valve-covering plates and center valve-operating mechanism removed. Fig; 3 is an interior view of the wheel and easing. Fig. at is a side view showing the valve-covering plates and supply and exhaust pipes attached to the casing. Fig. 5 is a perspective View of the valve-operating plates, and Figs. 6, 7, and 8 are detailed per spective views.

In the accompanying drawings, A represents the casing, which is provided on its interior, adjacent to its inwardly-projecting flange a, with a recess or circumferential groove, a, which groove is bisected by vertically-moving cut-offs B, which operate in a recess in the flange, which recess extends below the plane of the groove a. A perspective view of one of these cut-offs is shown in Fig. 6 of the accompanying drawings.

To the exterior or outer edge of the casing A is secured a plate, 0, through which the shaft D passes,to which shaft the rotary piston E is rigidly attached. This piston is provided on both its faces with an eccentric groove, 0, into which grooves fit the projecting pins (1 of the sliding blocks F, which move in vertical grooves A in the casin These sliding blocks, which are operated by the rotary piston, are

Serial No. 176,157. (No model.)

connected to the cut-offs 13 by sliding bars D, which are provided with perforations into which lit the cross-bars (Z' of the cutoffs B and the projecting pins d of the sliding blocks F. The rotary piston is provided with the projecting portion E, which abuts against the inner surface of the flange a, and it is against this projecting portion that the live steam acts to cause the rotation of thepiston,

g g and y r/ indicate the entrance-ports of the steam, the exhaust-ports being indicated by h It.

By the construction thus described,when the piston is rotated and the projecting port-ion E thereof approaches the cut-oil's, said outoffs will be depressed, so that the wheel or piston may pass the same, this movement being caused by the sliding blocks,which arc reciprocatcd by the pins thereon moving in the occentrie grooves in the faces of the piston, said movement being imparted to the cutoffs at theproper time. i

The side casings are each similarly grooved and provided with similarly constructed grooves, in which the sliding blocks F, hereinbefore described, operate, and each of the side pieces is provided centrally with the con neeting web or wall adjacent to the grooves A, through which shaft D passes, so that the shaft of the rotary piston will have a solid bearing in these side pieces.

The rotary piston is provided on its periphery with a band or projecting flange, c, which will fit snugly against the said pieces and prevent the steam escaping from the steam-passage into and through the grooves.

To the exterior of the casing A is attached a covering-plate, O, which is provided with extended portions, as shown, and also with perforations which correspond as to locality with the stearnentrance ports 9 g g g and exhaust-ports h h, and this plate is also provided with openings in m.

The plate 0 is recessed on its inner side, so as to provide guide and passage ways for the reciprocating valves it and n, and said plate is fur ther groovediior the reception of bars 0, which connect the valves to each other and to the means for operating the same. The two valves n, which cover the upper entrance-ports, are connected to each other by a bar, 1), which is reciprocated horizontally by a rock-bar, 19, and

(No Model.) A A W. H. H. WHITING.

APPARATUS FOR WASHING PHOTOGRAPHIO NEGATI ES,

No. 335,002. Patented Jan. 26,11886..

FTL .2 L7 1 .4.

e 1 s L 3 Witnesses, Iva/enter,

A A c g2 d 5 d Wm. Whitby,

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N. PETERS. Phclo-Lflhogmplmr, Washmglun. n.0 

